164780340 has 24 divisors (see below), whose sum is σ = 461385120. Its totient is φ = 43941408.

The previous prime is 164780309. The next prime is 164780359. The reversal of 164780340 is 43087461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373110 + ... + 1373229.

It is an arithmetic number, because the mean of its divisors is an integer number (19224380).

Almost surely, 2^164780340 is an apocalyptic number.

164780340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164780340 is an abundant number, since it is smaller than the sum of its proper divisors (296604780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164780340 is a wasteful number, since it uses less digits than its factorization.

164780340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746351 (or 2746349 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 164780340 is about 12836.6794771857. The cubic root of 164780340 is about 548.2371547101.

The spelling of 164780340 in words is "one hundred sixty-four million, seven hundred eighty thousand, three hundred forty".